Stroop Test
Name the ink color, not the word — a classic attention test.
Play now →Time Perception Test
No clock, no counting aids — just your inner sense of time. Three blind estimates (3, 5 and 8 seconds in random order), and your score is how close you get on average. Harder than it sounds: most people are off by more than a second.
0/3
Trial
—
Last error
—
Avg error
—
Best avg
Start trial 1 The target will be shown — then estimate it without a clock
Three blind estimates: 3, 5 and 8 seconds in random order.
Works with click and Space / Enter. Don't count out loud — feel the interval.
How to play
- Click the box — the target duration is announced (e.g. "Estimate: 5.0s").
- Click again to start the blind timer. No clock, no counting aids.
- Click a third time when you think the target has been reached.
- Three trials later you get your average absolute error — lower is better.
Frequently asked questions
How does the time perception test work?
You get three blind estimates — 3, 5 and 8 seconds in random order. The target is announced, a silent timer runs, and you press Stop when you believe the time is up. Your score is the average absolute error across the three trials.
What is a good average error?
Most people land within 1.0–1.5 seconds of the target on average. Under 0.6s is excellent, and under 0.3s is a genuinely rare internal metronome. Interestingly, accuracy is usually best around the 5-second mark.
Why do people misjudge time?
Your brain has no single clock — it estimates from attention, memory and body signals. Time feels faster when you are busy and slower when bored or anxious. Warm rooms, caffeine and even your heart rate all nudge the estimate.
Can I count in my head or tap my foot?
You could, but that measures counting rhythm rather than time perception. For a meaningful score, hold the interval in your mind — most people use a felt "pulse" of the seconds passing.
Does time perception change with age or mood?
Yes. Perceived time speeds up as you age (each year is a smaller fraction of your life), and emotion distorts it strongly: fear stretches time, fun compresses it. Comparing scores across days can reflect your state, not just your skill.